Myers’ Psychology for AP* David G. Myers PowerPoint Presentation Slides by Kent Korek Germantown High School Worth Publishers, © 2010 *AP is a trademark registered and/or owned by the College Board, which was not involved in the production of, and does not endorse, this product.

Unit 3C: Biological Bases of Behavior: Genetics, Evolutionary Psychology, and Behavior

Unit Overview Behavior Genetics: Predicting Individual Differences Evolutionary Psychology: Understanding Human Nature Reflections on Nature and Nurture Click on the any of the above hyperlinks to go to that section in the presentation.

Behavior Genetics: Predicting Individual Differences

Introduction Behavior genetics Heredity versus the environment

Genes: Our Codes for Life Chromosome DNA (deoxyribonucleic acid) Genes Active (expressed) vs. inactive Genome

Twin and Adoption Studies Identical Versus Fraternal Twins Identical twins Fraternal twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Identical Versus Fraternal Twins

Twin and Adoption Studies Separated Twins U of MN studies on identical twins separated at birth Anecdotal evidence “Virtual twins”

Twin and Adoption Studies Biological Versus Adoptive Relatives Genetic relatives Environmental relatives

Heritability Heritability “difference among people”

Heritability Group Differences Heritable differences between individuals does not imply heritable group differences

Heritability Nature and Nurture Influence of adaptation Nature and nurture work together Genes are self-regulating

Gene-Environment Interaction Genes and experience interact Evocative interactions

The New Frontier: Molecular Genetics Molecular behavior genetics Genetics and diseases

Evolutionary Psychology: Understanding Human Nature

Natural Selection and Adaptation Evolutionary psychology Natural selection Mutation Adaptation Fitness

Evolutionary Success Helps Explain Similarities Behaviors that contribute to survival are found throughout cultures

Evolutionary Success Helps Explain Similarities Outdated Tendencies Genetic traits which helped our ancestors survive may harm us today

“the Second Darwinian Revolution” Evolutionary Success Helps Explain Similarities Evolutionary Psychology Today “the Second Darwinian Revolution”

Studies suggesting men have a stronger tendency towards sex An Evolutionary Explanation of Human Sexuality Gender Differences in Sexuality Studies suggesting men have a stronger tendency towards sex

Differing preferences in partners An Evolutionary Explanation of Human Sexuality Natural Selection and Mating Preferences Differing preferences in partners Male preferences Female preferences

Critiquing the Evolutionary Perspective Backward theorizing Impact of social influence

Reflections on Nature and Nurture

The End

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Teacher Information Continuity slides Throughout this presentation there are slides, usually of graphics or tables, that build on one another. These are included for three purposes. By presenting information in small chunks, students will find it easier to process and remember the concepts. By continually changing slides, students will stay interested in the presentation. To facilitate class discussion and critical thinking. Students should be encouraged to think about “what might come next” in the series of slides. Please feel free to contact me at kkorek@germantown.k12.wi.us with any questions, concerns, suggestions, etc. regarding these presentations. Kent Korek Germantown High School Germantown, WI 53022 262-253-3400 kkorek@germantown.k12.wi.us

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Definition Slides

Behavior genetics = the study of the relative power and limits of genetic and environmental influences on behavior.

Environment = every non-genetic influence, from prenatal nutrition to the people and things around us.

Chromosomes = threadlike structures made of DNA molecules that contain the genes.

DNA (deoxyribonucleic acid) = a complex molecule containing the genetic information that makes up the chromosomes.

Genes = the biochemical units of heredity that make up the chromosomes; segments of DNA capable of synthesizing a protein.

Genome = the complete instructions for making an organism, consisting of all the genetic material in that organism’s chromosomes.

Identical Twins = twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms.

Fraternal Twins = twins who develop from separate fertilized eggs. They are genetically no closer than brothers and sisters, but they share a fetal environment.

Heritability = the proportion of variation among individuals that we can attribute to genes. The heritability of a trait may vary, depending on the range of populations and environments studied.

Interaction = the interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity).

Molecular Genetics = the subfield of biology that studies the molecular structure and function of genes.

Evolutionary Psychology = the study of the evolution of behavior and the mind,using principles of natural selection.

Natural Selection = the principle that, among the range of inherited trait variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations.

Mutation = the random error in gene replication that leads to a change.